Passenger car automatic parking brake (versions)

FIELD: railway transport.

SUBSTANCE: invention relates to combinations of automatic brakes of different type vehicles. Proposed automatic parking brake has housing of brake cylinder with guide, unit and lock of parking brake, accumulating spring, air distributor (according to first design version). Lock is made in form of spring loaded rod-piston installed in unit and forming rod space with the unit. Rod space communicates with brake main line through charge-discharge channel which includes check valve with calibrated hole and additional reservoir arranged before unit. Unit is installed on brake cylinder housing. Rod of brake cylinder is furnished with stop. At discharge of brake main line, spring-loaded rod-piston can into power contact by its end face with said stop. According to second design version, variable volume pneumatic reservoir made of flexible hermetic material is placed into rod space of unit installed on brake cylinder housing.

EFFECT: automatic change over of emergency braking mode into parking mode after stopping of vehicle and provision of release of car parking brake at connection to brake main line of locomotive.

4 cl, 5 dwg

 

The invention relates to combinations automatically operating the brakes of various types of rolling stock.

Known Automatic Parking brake of a rail vehicle" (USSR, AB. mon. No. 701853, VN 11/02, published 05.12.1979,), in which automatic tempering valve (7) is pneumatically connected with the working chamber of the diffuser (1) and brake line (5). The piston rod of the brake cylinder (2) articulated through the screw nesmotrya thread (8) is connected to the latch (9) of the rod of the brake cylinder, provided with a control valve (10) and a dog (11) of the locking device.

The disadvantage of this brake is the complexity and unreliability of operation.

Known disk brake rolling stock (the Federal Republic of Germany, application No. 3728297, VN 5/10, 13/20, published 09.03.1989 g), spring energoakkumulyator which presses the brake pads to the brake discs. In the absence of compressed air in the brake system spring energoakkumulyator (18) rotates the levers (20, 21) and brake pads brake Tsang (15 and 16) are pressed against the brake disk (13), resulting in inhibition of rolling stock.

The disadvantages of this brake must primarily be attributed to the presence of a detached energoakkumulyator (pneumatic cylinder with spring) and flexible rod (19), which is oiginal energoakkumulyator with levers (20 and 21), that significantly reduces the reliability of the design.

It is known Device for brake control of a rail vehicle" (AB. mon. The USSR №1555161, VT 15/04, published 07.04.1990 g)containing the governing body (16) with a valve (17) brake valve (18) vacation, connected respectively to a surge tank (10) and to the feed line (15) and connected through a charge-discharge valve (19) surge tank (10). Channel (19) is connected to the reservoir (14) time, which is constantly communicated with the atmosphere of the throttle hole (20). Gearbox (1) shall replenish the compressed air surge tank (10). Created by gearbox in a surge tank pressure exceeds the normal charging pressure set by the spring force (5), because through the piston (11) and spring (12) on the diaphragm (4), there is an additional force from the pressure of the compressed air in the tank (14) time is connected to the charge-discharge valve (19).

This device allows you to automate the process of release brake pressure, but has a complex structure, it has a governing body (16), gear (1) charging pressure, and other elements.

For both options for the prototype accepted "Automatic Parking brake of a rail vehicle" (the USSR, the watts. mon. No. 1191342, VN 11/02, published 15.11.1985,), in which the block (20) retainer (7) Parking brake in any working position of the piston rod of the brake cylinder mounted on the frame via an elastic bearing (9) and screw mechanism, the elastic partition wall (22) is made with a hollow hub (23), spring-loaded relative to the block (20) and having a movable cone (24)that communicates with the terminal (16) by covering its rolling elements (26)are located in the distance sleeve (15)having the ability to move the rod (16). The brake includes a housing of a brake cylinder (3), distributor (1), connected through releasing the valve (4) to the brake line (5) and communicated by channels with a spare air manifold (2) and the brake cylinder (3), the piston rod of which is pivotally connected by a link controller with tick-borne mechanism (6) with the possibility of loading the latch, Parking brake, operated by pressure from the brake line and accumulating spring (25).

The disadvantage of this design is the difficulty in manufacturing.

Option 1, 2. The objective of the proposal is to increase the reliability of the Parking brake by providing automatic vacation of the Parking brake by the pressure of the compressed air, ensure the compactness of the arrangement of the spring energoakkumulyator and use existing the existing elements of the actuator and linkage brakes.

Option 1. This automatic Parking brake passenger car includes a housing of a brake cylinder, equipped with the guide block and release the Parking brake, accumulating spring, air, connected through releasing the valve to the brake line and reported by primocanale with the reservoir and the brake cylinder, a rod which is located in the guide and pivotally connected by a link controller gaps with tick-borne mechanism. What's new is that the said retainer is made in the form of a spring-loaded rod-piston mounted in said block and forming therein the rod cavity, the latter is communicated with the brake line charge-discharge channel, which includes a check valve with a calibrated orifice and an additional reservoir, located in front of the unit mounted on the body of the brake cylinder, and the piston rod of the brake cylinder is equipped with a stop, which has the ability with a time lag to enter into a power contact, a spring-loaded rod-piston during the discharge brake line.

Another feature of the brake is that common to all blocks of the Parking brake of the car an additional reservoir is included in the charge-discharge channel, the output of which is in the brake line is limited kalibawang the m hole of the check valve.

Option 2. This automatic Parking brake passenger car includes a housing of a brake cylinder with guide, block and release the Parking brake, accumulating spring, air, connected through releasing the valve to the brake line and pneumatically communicated by channels with the reservoir and the brake cylinder, the piston rod of which is pivotally connected by means of a level controller gaps with tick-borne mechanism. What's new is that rod in the cavity of the block that is installed on the housing of the brake cylinder, is attached to pneumococci variable volume, made of a flexible airtight material, and the brake line and the above-mentioned pneumococci unit communicated with each other by means passing through the hole of the block charge-discharge channel, which includes a check valve with a calibrated orifice and an additional reservoir, located in front of the unit, the said latch is made in the form of a spring-loaded rod-piston installed in the block, and the rod of the brake cylinder is equipped with a stop, which has the ability with a time lag to engage in heavy contact with their end of the spring rod-the piston during the discharge brake line.

Another feature of the brake is that common to all blocks auxiliary deceleration is and carriage an additional reservoir is included in the charge-discharge channel, the output of which is in the brake line is limited to the orifice check valve.

The technical result will be expressed as follows.

Version 1.2.

The inclusion of charge-discharge channel check valve with a calibrated orifice and an additional tank with the location of the last before the unit will automatically translate an emergency braking mode after stopping the vehicle in the Parking and to provide the holiday Parking brake of the car when it is connected to the brake line of the locomotive.

Execution of the release of the Parking brake in the form of a spring-loaded rod-piston installed in the block and forming therein the rod cavity, you can use it as energoakkumulyator that allows you to translate automatically, after stopping the vehicle and discharging brake line, tick the mechanism of mode Parking brake.

Equipment stock brake cylinder emphasis, which has the ability with a time lag to engage in heavy contact with their end of the spring-loaded rod-piston, will ensure that the braking force of the Parking brake after the compressed air is released from the brake cylinder of the car.

The additional discharge tank through a calibrated orifice check valve allows yet not to engage the Parking brake during emergency braking emergency brake.

Enable shared for all blocks of the Parking brake of the car an extra tank in the charge-discharge channel, the output of which is in the brake line is limited to the orifice check valve simplifies the wiring blocks in the whole car to charge-discharge channel, ensure the Parking brake only after discharging brake line with a time lag and, in addition, allows auto release Parking brake of the car when connecting the main brake line of the car to the brake line of the locomotive.

Option 1.

Message the rod end of the above-mentioned block attached to the housing of the brake cylinder, brake line charge-discharge channel, which includes a check valve with a calibrated orifice and an additional reservoir, will ensure the preservation of the braking force after the compressed air is released from the brake cylinder of the car.

Option 2.

The attachment rod in the cavity of the block that is installed on the housing of the brake cylinder, pneumococci variable volume, made of a flexible airtight material, will reduce the loss of compressed air from the brake line during the movement of the train.

The message between the brake line and the above-mentioned pneumococci block by about Osenovo through the hole block charge-discharge channel, which includes a check valve with a calibrated orifice and an additional reservoir, will ensure the preservation of the braking force after the compressed air is released from the brake cylinder of the car.

The accompanying drawings represent:

figure 1 is a General diagram of the Parking brake in the deviant condition of tick mechanism (first version);

figure 2 - the same (the second option);

figure 3 - diagram of the brake in the braking mode (both);

4 is a diagram of the Parking brake mode (both);

5 is a view I on 1, 2 on the back of the valve with a calibrated orifice in the valve (plunger).

Option 1.

Automatic Parking brake passenger car includes a housing 1 of a brake cylinder with a tubular guide 2, Parking brake, including unit 3 attached to the housing 1 are mounted inside the latch, Parking brake, made in the form of a piston, a piston 4 (sleeve with flange), based on accumulating (compressed) spring 5, the diffuser 6, connected through releasing, and having a control valve 7 to the brake line 8, pneumatically communicated by channels with a spare tank 9 and the brake cylinder. In the tubular rod 10 of the piston 11 of the brake cylinder is placed a link 12 screw of the regulator clearance to compensate for wear of the brake pads. Link 12 soy is into articulated with tick-borne mechanism 13 (Fig 3) with the possibility of loading the rod-piston 4, established in the guide 14 of block 3 of the Parking brake. Unit 3 attached to the housing of the brake cylinder. Rod-piston 4 in block 3 forms a rod cavity 15 under the pressure of compressed air (Fig 1, 3). Compressed air pressure in the rod end of the block is maintained by the cuffs, sealing the connection rod-piston with the cylinder block 3. In block 3 is accumulating spring 5, elastically compressed between the housing 1 brake cylinder and the piston, the piston 4 when the charged brake line.

The tubular shaft 10 has fixed on its end stop 16. The rod 10 interacts with the guide rail 2, covered by a coaxial rod-piston 4. The end face of the piston, the piston 4 to transmit the braking force on the clamp mechanism has the ability to enter into heavy contact with the stop 16 with a time lag equal to the period of the discharge pressure of the compressed air from the rod end 15 of the block and the additional reservoir 18 (figure 1), located in front of the unit 3 or (option 2) from pneumococci variable volume 17 and the additional reservoir 18 (2), in the brake line 8 when it is discharged through a calibrated orifice 19 of the check valve 20 (the latter is in the plunger).

Brake line 8 and the above-mentioned rod cavity 15 is communicated between a charge-discharge channel 21.

Common to all units standing the internal brake of the car an additional reservoir 18 is included in the charge-discharge channel 21, the output of which is in the brake line is limited to the orifice 19 of the check valve 20. Using an orifice 19 and the additional reservoir 18 Parking brake is activated with a time lag that prevents simultaneous loading pads in the main movement and Parking brakes.

The rod 10 may be directly connected to the axis of the hinge with one of the levers tick mechanism.

Option 2.

The inventive brake according to the second variant repeats the design of option 1 and characterized in that the rod cavity block 3 mounted on the housing of the brake cylinder, is attached to pneumococci 17 variable volume, made of a flexible airtight material. The brake line and the above-mentioned pneumococci communicated between a charge-discharge channel 21. Charge-discharge channel is passed through the hole of the block 3.

The brake operates as follows.

Holiday Parking brake of the car before moving needs brake line of the train connected to the main brake line of the locomotive.

Compressed air from the pump through the check valve 20 and an additional reservoir 18 will be received in the rod cavity 15 of the block (figure 1) and moves the piston, the piston 4 to the left, compressing accumulating spring 5. The spring 24 in the brake cylinder through the piston 11 of the rod 10, the link 12 is the slider gap, tick mechanism 13 will press the brake pads 23 to its original position.

When speed or full service braking compressed air from the auxiliary reservoir 9 through the diffuser 6 enters the piston cavity 22 of the brake cylinder (1, 2, 3).

The piston 11 through the rod 10, the link controller 12 gaps, protruding from the rod 10, transmits the force to the brake cylinder of the clamp mechanism 13, without affecting the brake rod cavity 15 or pneumococci 17 which tank 18 are under the pressure of compressed air. This pressure during movement of the vehicle holds the compressed spring 5 in the condition of the spring energoakkumulyator.

When long-term Parking of the car and disconnect terminal cranes (after uncoupling of the cars locomotive) the air pressure in the brake line 8 drops accumulating spring 5 through the stop 16 loads induced mechanism and pads 23 in the Parking mode, and the pressure drop of the compressed air in the spare tank 9 is accompanied by a drop in pressure in the rod end 15 or pneumococci 17 block. In the storage spring Parking brake pulls in the working position of the piston 11 of the main brake (figure 4), at the same time, compressed air from the reservoir 18, the rod end 15 or pneumococci 17 is produced through a calibrated resp is rtie 19 check valve in the brake line 8, and from it into the atmosphere.

A calibrated orifice 19 is selected so that the reservoir 18 and the rod cavity 15 or pneumococci 17 unit discharge with a time lag is sufficient to emergency brake emergency brake, the car was able to stop before accumulating spring 5 will load induced mechanism through the rod-piston 4, the stop 16, the rod 10 with part 12 of the regulator gap additional effort.

When charging the brake line compressed air through releasing the valve 7 is supplied to the distributor 6 through which charges the spare tank 9 and the same brake line air flows through the check valve 20 (he fully opens), charges an additional reservoir 18 and the rod cavity 15 or pneumococci 17 block. Rod-piston unit 4 moves to the left accumulates and compresses the spring 5, occupying independent of the rod 10 brake cylinder position (figure 3), after which there is a release of the brakes under the action of the weaker spring brake cylinder 24 (Fig 1, 2).

Time discharge the rod end of the block is determined by the amount of additional reservoir 18 and a cross section of an orifice made in the plunger valve.

1. Automatic Parking brake passenger car, comprising a housing of a brake cylinder which echoes with the guide, block and lock the Parking brake accumulator spring, air, connected through releasing the valve to the brake line and pneumatically communicated by channels with the reservoir and the brake cylinder, the piston rod of which is pivotally connected by means of a level controller gaps with tick-borne mechanism, characterized in that said retainer is made in the form of a spring-loaded rod-piston mounted in said block and forming therein the rod cavity, the latter is communicated with the brake line charge-discharge channel, which includes a check valve with a calibrated orifice and an additional reservoir, located in front of the unit mounted on the body of the brake cylinder and the brake rod the cylinder is fitted with an emphasis, which has the ability with a time lag to engage in heavy contact with his butt-spring rod-piston during the discharge brake line.

2. Automatic Parking brake according to claim 1, characterized in that the total for all blocks of the Parking brake of the car an additional reservoir is included in the charge-discharge channel, the output of which is in the brake line is limited to the orifice check valve.

3. Automatic Parking brake passenger car, comprising a housing of a brake cylinder with the direction the shining, block and lock the Parking brake accumulator spring, air, connected through releasing the valve to the brake line and pneumatically communicated by channels with the reservoir and the brake cylinder, the piston rod of which is pivotally connected by means of a level controller gaps with tick-borne mechanism, wherein the rod in the cavity of the block that is installed on the housing of the brake cylinder, is attached to pneumococci variable volume, made of a flexible airtight material, and the brake line and the above-mentioned pneumococci unit communicated with each other by means passing through the hole of the block charge-discharge channel, which includes a check valve with a calibrated orifice and an additional reservoir, located in front of block, the said latch is made in the form of a spring-loaded rod-piston installed in the block, and the rod of the brake cylinder is equipped with a stop, which has the ability with a time lag to engage in heavy contact with his butt-spring rod-piston during the discharge brake line.

4. Automatic Parking brake according to claim 1, characterized in that the total for all blocks of the Parking brake of the car an additional reservoir is included in the charge-discharge channel, the output of which is in the brake line restricted feces is povanim hole check valve.



 

Same patents:

FIELD: railway transport.

SUBSTANCE: invention relates to reduction ("softness") devices of vehicle brake air distributors. Proposed reduction device of brake air distributor has movable partition rigidly connected by rod with valve separating channels of spool and main line chambers of air distributor. Pressure equalizing chamber is arranged over partition. Partition is made to provide closing of channel of main line chamber by valve of rod under action of pressure build in pressure equalizing chamber at standard braking conditions. Displacement of partition, when valve is open, is limited by stop arranged at distance sufficient to communicate spool and main line chambers. Step is made form of limiting ring.

EFFECT: improved operation of brakes owing to opening of reduction valve at small pressures and simplified design of said device.

1 dwg

Passenger car brake // 2298501

FIELD: railway transport; brake systems of rail vehicles.

SUBSTANCE: proposed brake includes brake main line and feed main line, air distributor, brake cylinders with drives to brake linings and supply pipelines, antiskid valves and brake disks. Brake disks are rigidly secured on axles of wheelsets. Four pneumoelectric pressure converters with cables are connected to supply pipelines of brake cylinders. Said cables connect pneumoelectric pressure converters with microprocessor monitoring and diagnostic control system complex installed inside car. Indicator panels displaying information of condition of brake are installed in service vestibule and conductor compartment.

EFFECT: increased sensitivity of control of compressed air pressure in cylinders, safety of operation of cars, possibility of excluding additional volume of brake cylinders.

2 cl, 1 dwg

FIELD: rail way transport; train parking brakes.

SUBSTANCE: proposed automatic mechanical parking brake contains special flexible member in form of spring with static deflection of 20 mm under action of maximum brake pressure, rack-type lock of brake cylinder rod with wedge clamp and pneumatic drive, valve-type pressure regulator and two three-way air cocks. Said flexible member is located between rod of brake cylinder piston and brake rack train. Pneumatic drive includes two racks fastened to rod of brake cylinder, two wedge clamps with pressure shafts provided with tooth cut similar to teeth of racks, two pneumatic drives in form of double-acting pneumatic cylinders with pistons and springs. Valve-type pressure regulator of shutoff and control valve consists of rubber valve attached to rubber diaphragm, guide bushing, adjusting spring, pressure rod, housing consisting of two parts with flanged joint and thread on upper part of housing, adjusting cover with thread, valve seat in lower part of housing with supply air line and four outgoing axial air channels.

EFFECT: improved reliability of rail vehicle parking brake.

1 dwg

FIELD: railway transport; parking brake locks.

SUBSTANCE: proposed automatic mechanical lock of brake cylinder rod contains clamping device, two pneumatic drives of stop clamps. Two racks with gear cut are attached to rod of brake cylinder from two side diametrically opposite relative to longitudinal axis. Each pressure shaft of stop wedge clamps consists of two halves arranged in housing and engaging along inclined plane. One half of pressure shaft is provided with gear cut similar to that of rod rack for displacement under pressure of pneumatic drive piston rod at locking along axis of brake cylinder rod getting into complete engagement with teeth of rack of brake cylinder, thus reliably holding it in brake-applied position. Other half of pressure shaft plays the part of wedge at locking the brake cylinder rod in brake-applied position holding gear half of pressure shaft in engagement with rod rack.

EFFECT: improved reliability of locking of brake cylinder rod, simplified design and reduced overall dimensions of lock.

1 dwg

FIELD: railway transport; speed and acceleration control systems.

SUBSTANCE: proposed device contains derailment detector unit whose output is connected with input of brake cut-in unit connected to braking device. Derailment detector unit consists of two chambers, one nest in the other. Outer chamber is provided with discharge hole communicating with atmosphere and hole communicating with train brake main line. Inner chamber is provided with discharge hole communicating inner chamber with atmosphere and intake hole communicating inner and outer chambers and overlapped by inertia mass limited in displacement by guide rod and pressed to intake hole by its weight and spring. Upper wall of inner chamber is made in form of diaphragm rigid center of which is connected with brake cut-in unit through spring-loaded valve closing discharge hole of outer chamber communicating with atmosphere.

EFFECT: improved reliability of device owing to introduction of additional symptom of derailment-increased of frequency of displacements of inertia mass at beginning of car derailment.

1 dwg

Passenger car brake // 2272729

FIELD: railway transport; brakes.

SUBSTANCE: invention relates to brakes of rolling stock, namely, to high-speed passenger cars operating on main lines and equipped with antiskid devices. Proposed brake of main line passenger car equipped with antiskid device has brake main line and supply main line with connecting intercar hoses and angle cocks supplied with compressed air from master air reservoir of locomotive either directly or through driver's brake valve, air distributor, out pipelines from brake main line and supply main line, pressure relay, throttle and check valve, disconnecting two-way cock, brake cylinders with antislip valves. Brake system contains also additional pipeline and disconnecting three-way cock. Additional pipeline connects let out pipelines from brake main line to air distributor and from supply main line to supply reservoir, and disconnecting three-way cock is installed in place of connection of additional pipeline with let out pipe line of supply main line.

EFFECT: provision of quick action and reliability of brake at frequent application of brake with use of antiskid devices, preservation of serviceability of brake if passenger car is included into train containing cars not equipped with supply main lines.

1 dwg

FIELD: railway transport; parking brakes.

SUBSTANCE: proposed parking brake with adjustable brake pressure and remote manual control is provided with locking device in form of rubberized-metal air chamber of brake cylinder and shutoff valve for holding brake leverage in brake applied position, change-over valve to change air delivery from brake cylinder to rubberized-metal air chamber through shutoff valve and brake valve for manual application of brakes. Housing of change-over valve and brake valve are made in form of double-acting pneumatic cylinders with spool-type pistons having two extreme, namely, upper and lower, stable fixed position. Two brake valves are manually remote controlled through pneumatic circuit of parking brake. Similar valve-type pressure regulators are installed on change-over valve and shutoff valve. Seats of valve in lower part of housing are provided with inlet air channel and four outlet axial air channels. One three-way and four disconnecting air cocks are designed for functional changing over of parking brake.

EFFECT: improved reliability of brake.

1 dwg

FIELD: railway transport.

SUBSTANCE: proposed pneumatic system of automatic brake equipment contains air distributor, spare reservoir, two subsystems "automatic mode-brake cylinder" for each cantilever part of vehicle. Each subsystem provides independent transmission of brake forces to actuating mechanism of bogie of each cantilever part in proportion to its load. Invention improves efficiency of braking of vehicles carrying loads with displaced center of gravity relative to longitudinal axis of vehicle and provides stable brake characteristics and operation reliability.

EFFECT: enlarged operating capabilities.

1 dwg

FIELD: railway transport.

SUBSTANCE: proposed mechanical lock of brake cylinder rod contains brake cylinder rod with cylindrical insert with wedge-like cutout in zone where insert engages with pressure strips to prevent slipping of brake cylinder rod I fixed position. Stop clamping device is made in from of two clamps of self-braking multistep drives-motion converters to prevent separation of clamp under action of elastic forces of brake leverage and release spring of piston of brake cylinder in fixed position. To realize maximum possible force of clamps, their longitudinal axes are arranged square to spaces of wedge-like cutouts of insert and at acute angle to longitudinal axis of rod. Pneumatic drive is made in from of two individual double-acting pneumatic cylinders with possibility of use of air from main line of brake cylinder at braking for additional, drive apart from cylinder spring to provide clamp of rod of brake cylinder in brake-applied position and it is designed for fitting mechanical lock of brake cylinder rod onto brake cylinders of any type cars and locomotives.

EFFECT: improved fixing of brake cylinder rod.

1 dwg

The invention relates to railway transport and can be used for remote control of processes occurring in the brake system of a train braking, vacation, reroof and maintenance of the charging pressure in the brake line) with locomotive traction as part of the automatic driving system without participation of the operator, and individual organs remote control

FIELD: railway transport.

SUBSTANCE: proposed mechanical lock of brake cylinder rod contains brake cylinder rod with cylindrical insert with wedge-like cutout in zone where insert engages with pressure strips to prevent slipping of brake cylinder rod I fixed position. Stop clamping device is made in from of two clamps of self-braking multistep drives-motion converters to prevent separation of clamp under action of elastic forces of brake leverage and release spring of piston of brake cylinder in fixed position. To realize maximum possible force of clamps, their longitudinal axes are arranged square to spaces of wedge-like cutouts of insert and at acute angle to longitudinal axis of rod. Pneumatic drive is made in from of two individual double-acting pneumatic cylinders with possibility of use of air from main line of brake cylinder at braking for additional, drive apart from cylinder spring to provide clamp of rod of brake cylinder in brake-applied position and it is designed for fitting mechanical lock of brake cylinder rod onto brake cylinders of any type cars and locomotives.

EFFECT: improved fixing of brake cylinder rod.

1 dwg

FIELD: railway transport.

SUBSTANCE: proposed pneumatic system of automatic brake equipment contains air distributor, spare reservoir, two subsystems "automatic mode-brake cylinder" for each cantilever part of vehicle. Each subsystem provides independent transmission of brake forces to actuating mechanism of bogie of each cantilever part in proportion to its load. Invention improves efficiency of braking of vehicles carrying loads with displaced center of gravity relative to longitudinal axis of vehicle and provides stable brake characteristics and operation reliability.

EFFECT: enlarged operating capabilities.

1 dwg

FIELD: railway transport; parking brakes.

SUBSTANCE: proposed parking brake with adjustable brake pressure and remote manual control is provided with locking device in form of rubberized-metal air chamber of brake cylinder and shutoff valve for holding brake leverage in brake applied position, change-over valve to change air delivery from brake cylinder to rubberized-metal air chamber through shutoff valve and brake valve for manual application of brakes. Housing of change-over valve and brake valve are made in form of double-acting pneumatic cylinders with spool-type pistons having two extreme, namely, upper and lower, stable fixed position. Two brake valves are manually remote controlled through pneumatic circuit of parking brake. Similar valve-type pressure regulators are installed on change-over valve and shutoff valve. Seats of valve in lower part of housing are provided with inlet air channel and four outlet axial air channels. One three-way and four disconnecting air cocks are designed for functional changing over of parking brake.

EFFECT: improved reliability of brake.

1 dwg

Passenger car brake // 2272729

FIELD: railway transport; brakes.

SUBSTANCE: invention relates to brakes of rolling stock, namely, to high-speed passenger cars operating on main lines and equipped with antiskid devices. Proposed brake of main line passenger car equipped with antiskid device has brake main line and supply main line with connecting intercar hoses and angle cocks supplied with compressed air from master air reservoir of locomotive either directly or through driver's brake valve, air distributor, out pipelines from brake main line and supply main line, pressure relay, throttle and check valve, disconnecting two-way cock, brake cylinders with antislip valves. Brake system contains also additional pipeline and disconnecting three-way cock. Additional pipeline connects let out pipelines from brake main line to air distributor and from supply main line to supply reservoir, and disconnecting three-way cock is installed in place of connection of additional pipeline with let out pipe line of supply main line.

EFFECT: provision of quick action and reliability of brake at frequent application of brake with use of antiskid devices, preservation of serviceability of brake if passenger car is included into train containing cars not equipped with supply main lines.

1 dwg

FIELD: railway transport; speed and acceleration control systems.

SUBSTANCE: proposed device contains derailment detector unit whose output is connected with input of brake cut-in unit connected to braking device. Derailment detector unit consists of two chambers, one nest in the other. Outer chamber is provided with discharge hole communicating with atmosphere and hole communicating with train brake main line. Inner chamber is provided with discharge hole communicating inner chamber with atmosphere and intake hole communicating inner and outer chambers and overlapped by inertia mass limited in displacement by guide rod and pressed to intake hole by its weight and spring. Upper wall of inner chamber is made in form of diaphragm rigid center of which is connected with brake cut-in unit through spring-loaded valve closing discharge hole of outer chamber communicating with atmosphere.

EFFECT: improved reliability of device owing to introduction of additional symptom of derailment-increased of frequency of displacements of inertia mass at beginning of car derailment.

1 dwg

FIELD: railway transport; parking brake locks.

SUBSTANCE: proposed automatic mechanical lock of brake cylinder rod contains clamping device, two pneumatic drives of stop clamps. Two racks with gear cut are attached to rod of brake cylinder from two side diametrically opposite relative to longitudinal axis. Each pressure shaft of stop wedge clamps consists of two halves arranged in housing and engaging along inclined plane. One half of pressure shaft is provided with gear cut similar to that of rod rack for displacement under pressure of pneumatic drive piston rod at locking along axis of brake cylinder rod getting into complete engagement with teeth of rack of brake cylinder, thus reliably holding it in brake-applied position. Other half of pressure shaft plays the part of wedge at locking the brake cylinder rod in brake-applied position holding gear half of pressure shaft in engagement with rod rack.

EFFECT: improved reliability of locking of brake cylinder rod, simplified design and reduced overall dimensions of lock.

1 dwg

FIELD: rail way transport; train parking brakes.

SUBSTANCE: proposed automatic mechanical parking brake contains special flexible member in form of spring with static deflection of 20 mm under action of maximum brake pressure, rack-type lock of brake cylinder rod with wedge clamp and pneumatic drive, valve-type pressure regulator and two three-way air cocks. Said flexible member is located between rod of brake cylinder piston and brake rack train. Pneumatic drive includes two racks fastened to rod of brake cylinder, two wedge clamps with pressure shafts provided with tooth cut similar to teeth of racks, two pneumatic drives in form of double-acting pneumatic cylinders with pistons and springs. Valve-type pressure regulator of shutoff and control valve consists of rubber valve attached to rubber diaphragm, guide bushing, adjusting spring, pressure rod, housing consisting of two parts with flanged joint and thread on upper part of housing, adjusting cover with thread, valve seat in lower part of housing with supply air line and four outgoing axial air channels.

EFFECT: improved reliability of rail vehicle parking brake.

1 dwg

Passenger car brake // 2298501

FIELD: railway transport; brake systems of rail vehicles.

SUBSTANCE: proposed brake includes brake main line and feed main line, air distributor, brake cylinders with drives to brake linings and supply pipelines, antiskid valves and brake disks. Brake disks are rigidly secured on axles of wheelsets. Four pneumoelectric pressure converters with cables are connected to supply pipelines of brake cylinders. Said cables connect pneumoelectric pressure converters with microprocessor monitoring and diagnostic control system complex installed inside car. Indicator panels displaying information of condition of brake are installed in service vestibule and conductor compartment.

EFFECT: increased sensitivity of control of compressed air pressure in cylinders, safety of operation of cars, possibility of excluding additional volume of brake cylinders.

2 cl, 1 dwg

FIELD: railway transport.

SUBSTANCE: invention relates to reduction ("softness") devices of vehicle brake air distributors. Proposed reduction device of brake air distributor has movable partition rigidly connected by rod with valve separating channels of spool and main line chambers of air distributor. Pressure equalizing chamber is arranged over partition. Partition is made to provide closing of channel of main line chamber by valve of rod under action of pressure build in pressure equalizing chamber at standard braking conditions. Displacement of partition, when valve is open, is limited by stop arranged at distance sufficient to communicate spool and main line chambers. Step is made form of limiting ring.

EFFECT: improved operation of brakes owing to opening of reduction valve at small pressures and simplified design of said device.

1 dwg

FIELD: railway transport.

SUBSTANCE: invention relates to combinations of automatic brakes of different type vehicles. Proposed automatic parking brake has housing of brake cylinder with guide, unit and lock of parking brake, accumulating spring, air distributor (according to first design version). Lock is made in form of spring loaded rod-piston installed in unit and forming rod space with the unit. Rod space communicates with brake main line through charge-discharge channel which includes check valve with calibrated hole and additional reservoir arranged before unit. Unit is installed on brake cylinder housing. Rod of brake cylinder is furnished with stop. At discharge of brake main line, spring-loaded rod-piston can into power contact by its end face with said stop. According to second design version, variable volume pneumatic reservoir made of flexible hermetic material is placed into rod space of unit installed on brake cylinder housing.

EFFECT: automatic change over of emergency braking mode into parking mode after stopping of vehicle and provision of release of car parking brake at connection to brake main line of locomotive.

4 cl, 5 dwg

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